What’s the story about the crossword puzzle?

Su Dongpo asked for directions. Su Dongpo went to visit a friend. When he came to a three-way intersection, he hesitated, not knowing whether to go left or right. At this time, there happened to be an old man sitting on a big stone at the intersection to rest, and Su Dongpo stepped forward to ask.

Unexpectedly, the old man said nothing after hearing this, but turned around and hid behind the stone, then exposed his head and looked at Su Dongpo. Su Dongpo felt very puzzled and thought to himself: Why is this old man running behind the stone and looking at me without giving directions or answering questions? Then I thought about it and suddenly realized. Then he walked in the direction suggested by the old man. The word "石" begins with "right", so you should go to the right.

History of crossword puzzles:

Word puzzles have riddle makers and riddle guessers. As the name suggests, they are riddle makers and puzzle makers. The riddles must be clever and then solved by the riddle guessers. It has a long history in China, is widely spread, has many types and endless changes. It is popular among literati and has also been used in political struggles and prophecies. In modern times, crossword puzzles are more popular among the people as a higher-level entertainment activity and are loved by the masses.

The compilation of this kind of riddle with one or several Chinese characters as the answer either takes advantage of the rules of Chinese character creation, or takes advantage of certain characteristics of Chinese characters in form, sound, and meaning, which seems to have both Interesting and informative.